Potomac River at Williamsport, Washington County MD (WLLM2)
Gage Location: Washington County, MarylandSite Location: Washington County, Maryland
Latitude: 39.609Longitude: -77.848Elevation: 327.7 ft. MSLDrainage Area: 4943 Sq. Mi.
Minor Stage: 23 ft. Moderate Stage: 25 ft.Major Stage: 28 ft.
First Flood: 1936-03-18Last Flood: 1996-09-08 Crest: 31.1 ft.Datum change: 1932-01-01Number of Floods: 8

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MonthNumber
of
Floods
After
Datum
Number
of
Floods
Total
Cumulative
Total
After
Datum
Cumulative
Total
January1111
February0011
March1122
April1133
May0033
June1144
July0044
August0044
September1155
October2277
November1188
December0088

Seasonal Totals
Winter (Dec-Jan-Feb)1
Spring (Mar-Apr-May)2
Summer (Jun-Jul-Aug)1
Fall (Sep-Oct-Nov)4